Butterfly Network (BFLY) director Larry Robbins reports share purchase

Rhea-AI Filing Summary

Butterfly Network director and 10% owner Larry Robbins reported buying 21,370 shares of Class A common stock on December 11, 2025 at a weighted average price of $3.0169. The filing notes these were open-market purchases, with individual trade prices ranging from $3.015 to $3.02.

After this transaction, Robbins beneficially owned 14,335,055 shares indirectly through the Glenview Investment Funds and 4,546,687 shares indirectly through Longview Investors LLC or its affiliates, plus 365,505 shares held directly. The direct holdings include 80,434 unvested restricted stock units, each representing one share, which vest in full at Butterfly Network’s 2026 annual stockholders meeting, subject to Robbins’ continued service on the board. Footnotes explain that Glenview and Longview are the record holders, that Robbins may be deemed to share voting and dispositive power, and that he disclaims beneficial ownership beyond any pecuniary interest.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

ROBBINS LARRY

(Last) (First) (Middle)

520 MADISON AVENUE

33RD FLOOR

(Street)

NEW YORK NY 10022

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Butterfly Network, Inc. [ BFLY ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
12/11/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	12/11/2025		P		21,370(1)	A	$3.0169(2)	14,335,055	I	See footnotes(3)(5)
Class A Common Stock								4,546,687	I	See footnotes(4)(5)
Class A Common Stock								365,505(6)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. These shares of the Issuer's Common Stock, par value $0.0001 per share (the "Shares") were purchased by Glenview Capital Master Fund, Ltd., Glenview Offshore Opportunity Master Fund, Ltd. and Glenview Healthcare Master Fund, L.P. (collectively, the "Glenview Investment Funds").

2. This price reflects the weighted average price for open-market purchases of Shares on December 11, 2025 within a $1.00 range. The actual prices for these transactions range from $3.015 to $3.02, inclusive. Mr. Robbins further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of Shares purchased at each separate price.

3. The Glenview Investment Funds are the record holders of these Shares. Mr. Robbins is the Founder, Portfolio Manager and CEO of Glenview Capital Management, LLC, which serves as investment manager to each of the Glenview Investment Funds. Mr. Robbins shares voting and dispositive power over the Shares held by the Glenview Investment Funds and may be deemed to beneficially own such Shares.

4. Longview Investors LLC ("Longview"), or its affiliates, is the record holder of these securities. Mr. Robbins is the managing member of Longview. Mr. Robbins shares voting and dispositive power over the securities held by Longview and may be deemed to beneficially own such securities.

5. Mr. Robbins disclaims beneficial ownership over any securities owned by Longview and the Glenview Investment Funds other than to the extent of any pecuniary interest he may have therein.

6. Includes 80,434 unvested restricted stock units ("RSUs"). Each RSU represents the right to receive one Share upon vesting. The RSUs vest in full on the date of the Issuer's 2026 Annual Stockholders Meeting, subject to Mr. Robbins' continued service on the Board of Directors on such date.

	/s/ Larry Robbins	12/15/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transaction did Butterfly Network (BFLY) report for Larry Robbins?

Larry Robbins reported an open-market purchase of 21,370 shares of Butterfly Network Class A common stock on December 11, 2025 at a weighted average price of $3.0169 per share.

How many Butterfly Network (BFLY) shares does Larry Robbins beneficially own after this transaction?

Following the reported trade, Larry Robbins beneficially owns 14,335,055 shares indirectly through the Glenview Investment Funds, 4,546,687 shares indirectly through Longview Investors LLC or its affiliates, and 365,505 shares directly.

At what prices were Larry Robbins’ Butterfly Network (BFLY) shares purchased on December 11, 2025?

The filing states a weighted average purchase price of $3.0169 per share for the 21,370 shares, with individual open-market trade prices ranging from $3.015 to $3.02, inclusive.

What is Larry Robbins’ relationship to Butterfly Network (BFLY)?

Larry Robbins is identified as a director of Butterfly Network and a 10% owner. He is also the Founder, Portfolio Manager and CEO of Glenview Capital Management, LLC, which manages the Glenview Investment Funds, and the managing member of Longview Investors LLC.

What are the terms of Larry Robbins’ restricted stock units in Butterfly Network (BFLY)?

Robbins’ direct holdings include 80,434 unvested restricted stock units (RSUs). Each RSU represents the right to receive one share of Butterfly Network common stock upon vesting, and the RSUs vest in full on the date of the company’s 2026 Annual Stockholders Meeting, subject to his continued service on the Board of Directors on that date.

Who are the record holders of the Butterfly Network (BFLY) shares reported for Larry Robbins?

The filing states that the Glenview Investment Funds are the record holders of certain shares and that Longview Investors LLC or its affiliates are the record holders of other securities. Larry Robbins may be deemed to share voting and dispositive power over these securities but disclaims beneficial ownership except to the extent of any pecuniary interest.